Coupling-plate foi



No Model.)

11H. LIDDY. I COUPLING PLATE FOR WHIPFLETREES.

No. 294,644. Patented Mm 4 188,4.

WITNESSES; INT/ENTER:

vogd

N. PETERS. Phalo-L'rlhbgi-apher. Washingon. D. c.

the passage of the draw-bolt.

To aZZ whom it may concern:

DENNIS H. LIDDY, on oNrrcnnno, IOIVA.

' COUF L|NG-PLATE FOR'WHIFFLETREES.

SPECIFICATION forming part of Letters PatentNo. 294,644, dated March 4, 1884.

Application filed February 26, 1,883. (No model.) Q I Beit known that I, DENNIs H. LIDDY, a citizen of the United States, residing at Monticello, in the county of Jones and State of Iowa, have inventedv new and useful Improvements inOoupling-Plates for Whiffletrees, of which the following is a specification, reference being had to the annexed drawings, making a part of this specification, and to the letters of reference marked'thereon.

This invention has relation to improvements in equalizers for vehicles;- and it consists in the construction and novel arrangement of parts, as will be hereinafter more fully set forth, and particularly pointed out in the claim appended.

Figure l-is a representation of a longitudinal sectional view of my device. Fig. 2 is a bottom plan view of the upper plate of the same, and Fig. 3 is a plan view of the ,under plate.

Referring by letter to the drawings, cates the single-tree or whiffietree plate, and B the pole or shaft cross-bar plate, both of which are provided with a central aperture, J, for The upper plate is provided with opposite branches, 0 O, the under sides of which are provided with downwardly-projecting studs 1), and diametrically opposite these studs, adjacent thereto, are

bossed apertures g for the passage of screws or the like, by which the said plate may be secured to a single-tree or whiffletree. The

plates on their adjacent faces are provided with an annular flange, h, which are about the same depth as the bosses g, and have a frictional engagement when the device is in operation, the bosses bearing upon the upper face of the under plate, B. The plate B is'pro- A an.

vided with branches d d", the former having perforations for the reception of screws, by

which it may be secured to a vehicle-tongue or the vcross-bar of shafts, and the latter provided with elongated semicircular slots at to receive the studs 1) of the upper plate, A. These slots are of sufficient length to allow the proper amount of play for the whiffletrees or single-trees; but uponstarting the vehicle, or

at any time during its movement, the unevenness of draft will be prevented by the engage= ment of the studs b with the front and rear walls of theslots a.

I am aware that it is not new to provide the cross-bar of shafts with a plate having a central aperture for thepassage of the king-bolt, and a SBIIliOiIOlllfiPSlQl} for the reception of a stud which extends downwardly from a plate 1 secured'to the whiffletree to limit the movement of the same, and therefore do not claim such construction, broadly; but,

Having thus described my invention, .what I claim as new, and desire to secure by Letters Patent, is-

The plate A,provided with the central drawbolt aperture, the extensions C, having the under bossed perforations, g, studs 12, and annular flanges 71,, in combination with the under plate, B,-having the branches d and d, the former having perforations, and the latter elongated slots a, the central draw-bolt aperture, and the annular flange, all adapted to operate substantially as and for the purposes specified. I v

DENNIS H. LIDDY.

WVitnesses:

H. H. STARKE, t FRANK O. J AOKSON. 

